No-one should need any hints for this puzzle, but if they really really do:

The map must have been disassembled, you'll have to reassemble it.

Some colors may be easier than others to assemble.

What's in the red square? What's in the green square?

Try putting all of the numbers together, and then piece the rest
together from that.

Follow the line from start to finish.

SOLUTION:

First one has to figure out that the "map" has been broken into pieces,
which can be put together in such a way that the colored lines line up.

This process is most easily done by seperating out first the red and green
lines. Those are the easiest to put together, because there are fewer of them.

From there, one should definitely see the '#' (pound sign) in the red square,
and the '1' (number one) in the green square.

Furthermore, some patterns may be seen in the colored lines. There are
many cards with yellow lines which have 'dead-ends', in which a clear
line ending is visible. Since at least one symbol can be seen (the
'#'), then it might be guessed that the dead-end yellow lines are parts
of other symbols. The blue lines only have two dead-ends.

Anyway, hopefully one gets to guess at the complete image resembling the
number-pad on a phone. The resulting "map" can be seen here.

Then we have a blue line (with occasional "bumps"), which weaves its way
from the '1' to the '#' (green to red). If we look at which numbers
have bumps in them, we get an 11-digit number sequence: 48255323779

Guessing that we should use the letters on the phone pad to convert to a
word, we go to a website. For example, we search google for "phone
number word" and get www.phonespell.org. Which tells
us that that number sequence spells: